Question

Evidence that is sensed (seen, heard, felt, etc.) by the investigators

Techniques (3 examples):
a) Surveillance
b) Eyewitness Testimony
c) Polygraph Examination

Answer 1

Evidence that is sensed by investigators includes surveillance, eyewitness testimony, and polygraph examinations.

Step-by-step explanation:

Evidence that is sensed by investigators can be crucial in solving crimes. Here are three techniques commonly used:

1. Surveillance: this involves discreetly monitoring the activities of individuals or locations to gather evidence. For example, installing cameras in strategic areas to capture video footage.
2. Eyewitness Testimony: when individuals who have witnessed a crime provide firsthand accounts of what they saw or experienced. This can be valuable evidence, although it is important to consider factors that may affect the accuracy of such testimonies.
3. Polygraph Examination: a lie detector test that measures physiological responses such as heart rate, respiration rate, and sweating to determine if someone is being truthful or not. However, the validity and accuracy of polygraph tests are highly debatable.